C[O:2][C:3]([C:5]1[S:28][C:8]2[N:9]=[CH:10][N:11]=[C:12]([NH:13][C:14]3[CH:19]=[CH:18][C:17]([F:20])=[CH:16][C:15]=3[O:21][CH:22]3[CH2:27][CH2:26][O:25][CH2:24][CH2:23]3)[C:7]=2[C:6]=1[CH3:29])=[O:4].[OH-].[Li+].Cl>C1COCC1>[F:20][C:17]1[CH:18]=[CH:19][C:14]([NH:13][C:12]2[C:7]3[C:6]([CH3:29])=[C:5]([C:3]([OH:4])=[O:2])[S:28][C:8]=3[N:9]=[CH:10][N:11]=2)=[C:15]([O:21][CH:22]2[CH2:23][CH2:24][O:25][CH2:26][CH2:27]2)[CH:16]=14-[4-Fluoro-2-(tetrahydro-pyran-4-yloxy)-phenylamino]-5-methyl-thieno[2,3-d]pyrimidine-6-carboxylic acid methylester (13.45 g) was dissolved in THF (100 ml) and lithium hydroxide (1M; 80.5 ml) was added. The reaction mixture was stirred at room temperature for 5 h. The mixture was acidified with HCl (1M) to pH 2, the resultant precipitate was filtered and washed with water.
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